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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Leon Romanovsky <leonro@nvidia.com>,
        Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH 4.19 244/247] ipv6: silence compilation warning for non-IPV6 builds
Date:   Mon,  1 Mar 2021 17:14:24 +0100
Message-Id: <20210301161043.654915074@linuxfoundation.org>
In-Reply-To: <20210301161031.684018251@linuxfoundation.org>
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From: Leon Romanovsky <leonro@nvidia.com>

commit 1faba27f11c8da244e793546a1b35a9b1da8208e upstream.

The W=1 compilation of allmodconfig generates the following warning:

net/ipv6/icmp.c:448:6: warning: no previous prototype for 'icmp6_send' [-Wmissing-prototypes]
  448 | void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
      |      ^~~~~~~~~~

Fix it by providing function declaration for builds with ipv6 as a module.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/icmpv6.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -16,9 +16,9 @@ static inline struct icmp6hdr *icmp6_hdr
 
 typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
 			     const struct in6_addr *force_saddr);
-#if IS_BUILTIN(CONFIG_IPV6)
 void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
 		const struct in6_addr *force_saddr);
+#if IS_BUILTIN(CONFIG_IPV6)
 static inline void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
 {
 	icmp6_send(skb, type, code, info, NULL);